Production of flameproof fibers of regenerated cellulose

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion

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106 15FP, 106165, 106177, 264191, D01F 208

Patent

active

039742512

ABSTRACT:
Flame-retardant fibers of regenerated cellulose are produced by adding one or more flame-retardant phosphorus compounds to the viscose, extruding the viscose into a spinning bath and, if desired, stretching and after-treating the resulting filaments or staple fibers. The flame-retardant agent is a compound of the general formula

REFERENCES:
patent: 2648597 (1953-08-01), Nielsen
patent: 3266918 (1966-08-01), Schappel et al.
patent: 3323944 (1967-06-01), Senez
patent: 3387980 (1968-06-01), Trainor et al.
patent: 3455713 (1969-07-01), Godfrey

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